<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>

<body>
    <script>
        var str = 'my name is taotao'
        console.log(str.length) // 17

        //  字符串的拼接
        console.log("沙漠" + "骆驼")
    </script>
</body>

</html>